GE 339

CHAPTER 6: SETPOINTS S3 PROTECTION
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–95
LOGIC OPERANDS
Starting
Running
= Enabled
Enable Two Speed Motor
High Speed Switch
MOTOR SETTING
AND
OR
AND
0
1s
AND
t
pu
0
t
pu
= ACCELERATION TIMER
LATCH
D
Clk
AND
2
SPD MOTOR SETTING
t
pu
0
t
pu
= ACCEL T ON STOPPED
AND
t
pu
0
t
pu
= ACCEL T ON LOW SPD
OR
= Enabled
Acceleration Timer Function
ACCELERATION SETTINGS
CONTACT INPUT OPERAND
Block 1
Block 2
Block 3
OR
AND
ACCELERATION SETTING
2
SPD MOTOR SETTING
TARGET MESSAGE
Acceleration Trip
LOGIC OPERAND
Acceleration Protection Op
Any Trip Op
Remote Reset
CONTACT INPUT OPERAND
Reset
KEYPAD OPERAND
OR
Set Dominant
NV
LATCH
S
R
896810A1.cdr
OUTPUT RELAYS
OUTPUT RELAY X
Do Not Operate, Operate